’s largest urbanareas representing 54 percent of the population, the total hours ... metropolitan areas is a key part of this problem. In 2007, congestion caused urbanAmericans to travel 4.2 billion hours more and to purchase an extra 2.8 billion gallons ...united states

and travelers in the largest U.S. cities spend 3.76 billion hours a year stuck in traffic ... Graph comparing vehiclemiles traveled with lane miles. Vehiclemiles traveled grew 88 percent, or 4 percent a year, between 1980 and 2003, from an index of 100 ...Traffic congestion is often one of the top concerns Americans cite in surveys

for largeurbanareas, and increased from 34.4 percent in 1995 to 40.7 percent in 2004 in very largeurbanareas. ... Percent of VMT Under Congested Conditions, by UrbanizedArea Size, 1995â€“2004 ... for the FHWA for several measures, based on data for all 428 urbanizedareas in 2004. (Note